8364611: (process) Child process SIGPIPE signal disposition should be default

[tstuefe]

Hi all,

Unclean (but trivially merged) backport. We need to address this since we've started seeing it at two customers now, and it makes sense to fix it at least in the upcoming newest LTS.

The backport is unclean since "8210549: Runtime.exec: in closeDescriptors(), use FD_CLOEXEC instead of close()" is in the way, and @RogerRiggs and I agreed on not backporting that one (had been purposely delayed to miss the JDK25 train).

• Tested on JDK25u on Linux x64 (ran java/lang/ProcessBuilder jtreg tests), which includes the provided regression test
• GHAs are clean

This pull request contains a backport of commit bdb1646a from the openjdk/jdk repository.

The commit being backported was authored by Thomas Stuefe on 11 Aug 2025 and was reviewed by Erik Joelsson and Roger Riggs.

Thanks!

---

Progress

• Change must be properly reviewed (1 review required, with at least 1 Reviewer)
• Change must not contain extraneous whitespace
• Commit message must refer to an issue
• JDK-8364611 needs maintainer approval

Issue

• JDK-8364611: (process) Child process SIGPIPE signal disposition should be default (Bug - P4 - Approved)

Reviewers

• Andrew Dinn (@adinn - Reviewer)

Reviewing

Using git

Checkout this PR locally:
$ git fetch https://git.openjdk.org/jdk25u.git pull/86/head:pull/86
$ git checkout pull/86

Update a local copy of the PR:
$ git checkout pull/86
$ git pull https://git.openjdk.org/jdk25u.git pull/86/head

Using Skara CLI tools

Checkout this PR locally:
$ git pr checkout 86

View PR using the GUI difftool:
$ git pr show -t 86

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Download this PR as a diff file:
https://git.openjdk.org/jdk25u/pull/86.diff

Using Webrev

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[bridgekeeper]

👋 Welcome back stuefe! A progress list of the required criteria for merging this PR into master will be added to the body of your pull request. There are additional pull request commands available for use with this pull request.

[openjdk]

@tstuefe This change now passes all automated pre-integration checks.

ℹ️ This project also has non-automated pre-integration requirements. Please see the file CONTRIBUTING.md for details.

After integration, the commit message for the final commit will be:

8364611: (process) Child process SIGPIPE signal disposition should be default

Reviewed-by: adinn

You can use pull request commands such as /summary, /contributor and /issue to adjust it as needed.

At the time when this comment was updated there had been 6 new commits pushed to the master branch:

• 8ef7d60: Merge
• 6c48f4e: 8348760: RadioButton is not shown if JRadioButtonMenuItem is rendered with ImageIcon in WindowsLookAndFeel
• 73c28c2: 8364038: Remove EA from the JDK 25 version string with first RC promotion
• ... and 3 more: https://git.openjdk.org/jdk25u/compare/b20f66fab9e15824377f1362837ff3fbef5555a5...master

As there are no conflicts, your changes will automatically be rebased on top of these commits when integrating. If you prefer to avoid this automatic rebasing, please check the documentation for the /integrate command for further details.

➡️ To integrate this PR with the above commit message to the master branch, type /integrate in a new comment.

[openjdk]

This backport pull request has now been updated with issue from the original commit.

[tstuefe]

Ping @RogerRiggs

[mlbridge]

Webrevs

• 00: Full (af06ec23)

[adinn]

Looks good.

[openjdk]

⚠️ @tstuefe This change is now ready for you to apply for maintainer approval. This can be done directly in each associated issue or by using the /approval command.

[tstuefe]

/approval I would like this to be fixed in JDK 25, since it fixes a rare but hard-to-analyze bug around Runtime.exec.

[openjdk]

@tstuefe usage: /approval [<id>] (request|cancel) [<text>]

[tstuefe]

/approval request I would like this to be fixed in JDK 25, since it fixes a rare but hard-to-analyze bug around Runtime.exec. The risk is very small.

[openjdk]

@tstuefe
8364611: The approval request has been created successfully.

[tstuefe]

/integrate

[openjdk]

Going to push as commit dd74835.
Since your change was applied there have been 9 commits pushed to the master branch:

• c8ae169: 8359449: [TEST] open/test/jdk/java/io/File/SymLinks.java Refactor extract method for Windows specific test
• f9d3489: 8363928: Specifying AOTCacheOutput with a blank path causes the JVM to crash
• 037133e: 8360783: CTW: Skip deoptimization between tiers
• ... and 6 more: https://git.openjdk.org/jdk25u/compare/b20f66fab9e15824377f1362837ff3fbef5555a5...master

Your commit was automatically rebased without conflicts.

[openjdk]

@tstuefe Pushed as commit dd74835.

💡 You may see a message that your pull request was closed with unmerged commits. This can be safely ignored.

[RogerRiggs]

looks good for jdk25

[TheRealMDoerr]

Please backport the follow-up fixes ASAP. Especially https://bugs.openjdk.org/browse/JDK-8365307. AIX build is currently broken!